Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jass...21..467k&link_type=abstract
Journal of Astronomy and Space Sciences. Vol. 21, no. 4, 467-480
Astronomy and Astrophysics
Astronomy
Instrumentation, Thermal Analysis, Infrared Camera
Scientific paper
It is very important to eliminate thermal background radiation for the near infrared camera system such as KAONICS (KAO Near Infrared Camera System). Thermal background radiations which come from window and cryostat wall influence IR detector and decrease IR system performance. Therefore the cold box which contains optics and detector housing must be cooled down to eliminate thermal background radiation. We carried out quantitative analysis to determine internal cooling temperature to reduce thermal noise in the J, H, Ks, and L bandpass. Additionally, we estimated the incoming heat load and then chose the cryocooler adequate to KAONICS's requirements. The cooling time and the final cooling temperature of the cold box were calculated. These results were also implemented to the system design.
Jin -Ho
Kang Ji-Na
Kim Sang-Ho
Lee Sung-Ho
Moon Bong-Kon
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